Telephone Ceramic Insulators

In north america glass was always the predominate material for communications insulators but porcelain has become the standard for power distribution due to its greater strength and surface resistance.

Telephone ceramic insulators. As technology developed insulators were needed for telephone lines electric power lines and other applications. Vintage electric ceramic glaze telephone telegraph pole insulator cap brown 19 49 1900 s hemingray 42 usa 24 48 telephone insulator 4 x 3 5 glass bead bottom. Similar to their glass counterparts porcelain insulators date back to before the civil war for telegraph wires. Rare vintage large ceramic high voltage power line insulator.

Vintage joslyn 103 spool insulators ceramic porcelain 3 telephone pole power. Telephone insulator cd 128 clear pyrex ab tm reg. In the mid 1960 s a few people began collecting these glass and porcelain insulators. Telephone wire utility power pole insulator ceramic glazed brown black white vtg.

45 clear telegraph telephone wire insulator. See more ideas about glass insulators insulation antique glass. Glass insulators were first produced in the 1850 s for use with telegraph lines. Aug 18 2013 explore alicia allen s board old telephone insulators followed by 136 people on pinterest.

Vintage brown ceramic telephone insulator with original wood peg 11 18 36. Insulators were first developed in the mid 1800s to be used on telegraph and telephone lines to contain the electrical current and prevent the current from entering the ground below. Porcelain is the most frequently used material for insulators insulators are made of wet processed porcelain. Make offer vintage brown ceramic railroad telephone insulators lot of 2.

Vintage insulators are most commonly made out of porcelain or glass materials and they come in a wide variety of colors and shapes making each item a unique. Today there are over 2000 collectors and insulator clubs national shows and good reference books are available. Lot of 4 hemmingray no. 5 00 6d 19h 14 90 shipping.

The fundamental materials used are a mixture of feldspar 35 china clay 28 flint 25 ball clay 10 and talc 2. Vintage brown ceramic railroad telephone insulators lot of 2. Insulators were originally designed to keep the wires linking telegraphs and telephones insulated from the wooden poles that held them aloft.